Question

a sound wave has a frequency of 3khz and wave length 25cm. the time taken by it to travel a distance of 1.5km is​

Answer 1

Answer:

GIVEN :

Frequency of sound =3 kHz=3*10^ 3 Hz

• Wavelength =25 cm=0.25 m

TO FIND :

• The time taken by it to travel a distance of 1.5 km=?

SOLUTION :

. We know that -

Velocity of sound Frequenc

Put the values -

Velocity of sound =(3*10^ 3 )*(0.2

Velocity of sound =(30)*(25)

Rightarrow Velo of sound = 750 * m/s

We also know that -

Rightarrow boxed Velocity= Distance Time

. So that -

Rightarrow750= 1.5*10^ 3 Time

Rightarrow750= 1500 Time

Rightarrow Time= 1500 750

ime=2 sec

Explanation:

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